400356436363643 has 8 divisors (see below), whose sum is σ = 414196135881600. Its totient is φ = 386519023856448.

The previous prime is 400356436363589. The next prime is 400356436363673. The reversal of 400356436363643 is 346363634653004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400356436363643 - 2²² = 400356432169339 is a prime.

It is a super-2 number, since 2×400356436363643² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400356436363673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571396523 + ... + 572096756.

It is an arithmetic number, because the mean of its divisors is an integer number (51774516985200).

Almost surely, 2^{400356436363643} is an apocalyptic number.

400356436363643 is a deficient number, since it is larger than the sum of its proper divisors (13839699517957).

400356436363643 is a wasteful number, since it uses less digits than its factorization.

400356436363643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143505381.

The product of its (nonzero) digits is 100776960, while the sum is 56.

The spelling of 400356436363643 in words is "four hundred trillion, three hundred fifty-six billion, four hundred thirty-six million, three hundred sixty-three thousand, six hundred forty-three".